Ultrasonic Irrigator with Nanoparticles for Joint Biofilm Cleaning
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Solution Overview
Problem
Current medical devices and procedures for treating joint infections, such as septic arthritis, are inadequate in effectively cleaning and disinfecting the joint space, particularly in minimally invasive surgeries like arthroscopy, leading to potential reinfection and the need for complex surgical interventions.
Innovation Solution
An ultrasonic irrigator device that uses nanoparticles suspended in a fluid medium, activated by an ultrasonic transducer, to generate cavitation bubbles and micro-jets for effective cleaning and disinfection of body cavities, including joints, by bombarding surfaces with nanoparticles to disrupt pathogens and biofilms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional irrigation and suction methods are used to clean joint space, then the procedure is simple and minimally invasive, but the cleaning effectiveness is insufficient and reinfection risk remains high
Solution Approach 1:
The patent replaces conventional mechanical irrigation and suction methods with ultrasonic vibration technology. The ultrasonic transducer generates high-frequency vibrations that create cavitation bubbles and micro-jets, which mechanically disrupt and remove biofilms and pathogens from the joint space more effectively than traditional fluid irrigation alone.
Solution Approach 2:
The patent introduces nanoparticles with specific physical and chemical properties (size, material composition, surface characteristics) into the irrigation fluid. These nanoparticles enhance the cleaning effectiveness by interacting with pathogens and biofilms through ultrasonic activation, changing the parameters of the cleaning medium from simple fluid to nanoparticle-enhanced suspension.
2Reliability
If surgical washout and debridement are performed to treat joint infection, then cleaning effectiveness improves, but the invasiveness and complexity of surgery increases
Solution Approach 1:
The patent replaces aggressive mechanical debridement and surgical washout with ultrasonic vibration-based cleaning. The ultrasonic cavitation and micro-jet effects achieve thorough disinfection of the joint space without requiring extensive surgical exposure, tissue removal, or complex surgical procedures.
Solution Approach 2:
The patent uses nanoparticles as intermediary agents between the ultrasonic energy and the pathogens/biofilms. These nanoparticles concentrate at the interface between the ultrasonic field and the contaminated surfaces, enhancing the disinfection effect and allowing effective treatment with lower ultrasonic energy levels, thereby reducing surgical invasiveness.
3Reliability
If multiple staged surgeries are performed to remove and replace artificial joint, then infection is ultimately treated, but treatment time and patient suffering increase
Solution Approach 1:
The patent applies ultrasonic nanoparticle-enhanced irrigation as a preliminary or adjunctive treatment during the initial surgical intervention. This preliminary disinfection action thoroughly cleans the joint space and removes pathogens before they can establish deep infection, preventing the need for subsequent staged surgeries and reducing overall treatment time.
Solution Approach 2:
The patent converts the potential harm of residual pathogens that might lead to recurrent infection into a benefit by using ultrasonic cavitation to completely eradicate them. The intense local energy delivery destroys pathogens and biofilms that would otherwise require multiple surgical interventions, turning a potentially chronic condition into a single-cure scenario.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The device achieves thorough cleaning and disinfection of body cavities, reducing the risk of reinfection and potentially eliminating the need for additional surgical procedures by using nanoparticles to disrupt bacterial membranes and biofilms.
Implementation Method 1
generating ultrasonic waves in the liquid with the nanoparticles suspended therein
Implementation Method 2
to generate cavitation bubbles and micro-jets for effective cleaning and disinfection
Implementation Method 3
generating ultrasonic waves in the liquid with the nanoparticles suspended therein
Data Source
AI summary
Nanoparticles are suspended in a fluid medium which is activated using an ultrasonic transducer in contact with the fluid medium. The fluid may be injected into a body cavity and ultrasonically activated to induce a cavitation effect. The body cavity may contain a natural or artificial hard surface, inflamed or with a biofilm harnessing bacteria, such as a bone, joint or implant, as well as the surrounding tissue. In an embodiment, a treatment device may be used before, during or after a procedure such as a minimally invasive or open surgery to disinfect the body cavity via irrigation with liquid containing suspended nanoparticles and ultrasonically activated. The irrigation device may supply the cavity with the liquid and include therein an ultrasonic transducer. The cleaning and disinfecting process may be performed as treatment of infection in absence of another surgical procedure.